Knocking Sound in Santro

Vys De BlUR · 7th March 2008, 20:20

I own a 2000 model santro. I recently got it tuned by a company mechanic. After that some times in 2nd or 1st gear the car sort of jumps forward and stalls. Then a mettallic knocking sound is heard from under the dash. Please help me sort this out guys.

condor · 7th March 2008, 21:45

At what speeds do you see this ?

jkdas · 7th March 2008, 21:47

What do you mean by tuned? Did you specifically ask them to tune for mileage or so?

Rehaan · 8th March 2008, 04:12

Quote:

Originally Posted by Vys De BlUR

IThen a mettallic knocking sound is heard from under the dash. Please help me sort this out guys.

Is it from under the dash, or is it likely to be coming from inside the engine bay?

Is it more of an erratic clicking sound ( a faulty relay ) ?

cya
R

amitwiz1 · 8th March 2008, 09:59

He mentioned "metallic knocking sound" so i must be the relay.

Jaggu · 8th March 2008, 13:47

Is it engine pinging?

Slightly OT: Yday i drove my Managers Getz 1.3 and boy oh boy once heated up with AC on, its a pain to move the car at incline (even in I gear) without pinging.

Have observed other Hyundai cars with the same phenomenon.

ram_hyundai · 8th March 2008, 15:50

Has the mileage dropped drastically,i feel the engine is running rich and overheating.I maybe wrong just a sugestion.

ram

dadu · 8th March 2008, 16:03

There is a aircon pipe which is attached to the body dividing the enginebay and cabin.

The pipe is clamped onto the body, if loose will rattle and make you feel as if something is rattling inside the dashboard.

Check it out.

Vys De BlUR · 11th March 2008, 12:58

I got it tuned for better acceleration. And the mileage has dropped by 1 or 2 km thats all.
OH and it happens at really low speeds like 20-40km/hr.

rks · 11th March 2008, 13:43

Quote:

Originally Posted by Vys De BlUR

I own a 2000 model santro. I recently got it tuned by a company mechanic. After that some times in 2nd or 1st gear the car sort of jumps forward and stalls. Then a mettallic knocking sound is heard from under the dash. Please help me sort this out guys.

I got my 2000 model Santro tuned for better pickup almost immediately after purchase and did not have any problem for several years. Recently I did observe a similar problem after the car was serviced at Sanjay Hyundai. The car tends to stall at low speeds and you have to be prompt with the gear changes. Your clutch release should be gradual when the car starts to move from a stationary position (especially on a cold engine).

At Sanjay Hyundai, apart from routine service (which presumably includes engine tuning) they also changed my tail pipe and did clutch overhaul. So I am not sure what exactly is the cause of the slight stall at lower speeds. E.g. if the speed comes down below 15-20 kmph in second, the car tends to stall a little. At Sanjay Hyundai they said this is normal, but I did not observe this earlier.

I am now routinely using Speed 97 and I must say the car has excellent pickup. I am ignoring the slight tendency to stall at lower speeds and I have made the adjustment needed in my driving style.

My suggestion is to try one or two tankfulls of Speed 97 and see if the knocking sound disappears (due to the higher octane rating). Poor quality fuel could be one possible reason.

n_aditya · 11th March 2008, 13:52

Quote:

Originally Posted by Vys De BlUR

I got it tuned for better acceleration. And the mileage has dropped by 1 or 2 km thats all.
OH and it happens at really low speeds like 20-40km/hr.

Check the timing. If the timing is advanced too much then pinking or knocking can occur. Also the quality of fuel used matters and bad quality fuel can cause knocking. Check the condition of the spark plugs too.

I had a similar issue a year or so back. For more info : http://www.team-bhp.com/forum/techni...ing-noise.html

jkdas · 11th March 2008, 14:05

And did you mean 'knocking?'

Vys De BlUR · 12th March 2008, 18:25

Thanks dudes for your suppport!! The problem is finally solved!! It was a problem with the DISTRIBUTION SYSTEM. I got it replaced. They also did do somethimg with the relay. But the bottom line is car's fine now, though i'm not!! 9.5k 4 the whole deal!!!!

Jaggu · 12th March 2008, 22:06

how did you guys tune the ECU car?

alv · 18th March 2008, 17:48

Need your help - My zen for the last 1 year has this peculiar knocking sound ( its like a wooden knocking ) sound that comes from the drivers side fron from below the bonnet . Its a Thud - thud sound and its very very irritating . I have visited 3 different Maruti service centres with this problem NO ONE has found a solution - Now heres what happens

This sound is heard ONLY during summers ( afternoons , heavy traffic in evening sessions ) , no sound at all through winters , rainy season only during summers . This happens after i have driven about 8 Kms + and the engine is sufficiently hot , once the engine cools there is no sound and begins once again after reaching a particular temp .

I know its something to do with expansion of some part on heating - but neither me ( given my limited technical knowledge on cars ) nor the service guys ( shame - given their experience in this field ) are able to sort out the issue .

anyone who has faced a similar issue -pls respond so that i can pin point the problem to service guys and get rid of it.

7th March 2008, 20:20	#1
Vys De BlUR BHPian Join Date: Sep 2007 Location: Trivandrum Posts: 47 Thanked: 0 Times View My Garage	Knocking Sound in Santro I own a 2000 model santro. I recently got it tuned by a company mechanic. After that some times in 2nd or 1st gear the car sort of jumps forward and stalls. Then a mettallic knocking sound is heard from under the dash. Please help me sort this out guys.
	() Thanks

7th March 2008, 21:45	#2
condor Distinguished - BHPian Join Date: Jun 2006 Location: Speed-brkr City Posts: 15,864 Thanked: 16,014 Times View My Garage	At what speeds do you see this ?
	() Thanks

7th March 2008, 21:47	#3
jkdas Senior - BHPian Join Date: Sep 2005 Location: Thiruvananthapu Posts: 9,687 Thanked: 1,492 Times View My Garage	What do you mean by tuned? Did you specifically ask them to tune for mileage or so?
	() Thanks

8th March 2008, 09:59	#5
amitwiz1 BHPian Join Date: Aug 2007 Location: Bangalore Posts: 210 Thanked: 26 Times	He mentioned "metallic knocking sound" so i must be the relay.
	() Thanks

8th March 2008, 13:47	#6
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,907 Times	Is it engine pinging? Slightly OT: Yday i drove my Managers Getz 1.3 and boy oh boy once heated up with AC on, its a pain to move the car at incline (even in I gear) without pinging. Have observed other Hyundai cars with the same phenomenon.
	() Thanks

8th March 2008, 15:50	#7
ram_hyundai Senior - BHPian Join Date: Jun 2006 Location: Calicut ,trisur Posts: 2,020 Thanked: 53 Times View My Garage	Has the mileage dropped drastically,i feel the engine is running rich and overheating.I maybe wrong just a sugestion. ram
	() Thanks

8th March 2008, 16:03	#8
dadu Senior - BHPian Join Date: May 2007 Location: Bangalore Posts: 3,803 Thanked: 462 Times View My Garage	There is a aircon pipe which is attached to the body dividing the enginebay and cabin. The pipe is clamped onto the body, if loose will rattle and make you feel as if something is rattling inside the dashboard. Check it out.
	() Thanks

11th March 2008, 12:58	#9
Vys De BlUR BHPian Join Date: Sep 2007 Location: Trivandrum Posts: 47 Thanked: 0 Times View My Garage	I got it tuned for better acceleration. And the mileage has dropped by 1 or 2 km thats all. OH and it happens at really low speeds like 20-40km/hr.
	() Thanks

11th March 2008, 14:05	#12
jkdas Senior - BHPian Join Date: Sep 2005 Location: Thiruvananthapu Posts: 9,687 Thanked: 1,492 Times View My Garage	And did you mean 'knocking?'
	() Thanks

12th March 2008, 18:25	#13
Vys De BlUR BHPian Join Date: Sep 2007 Location: Trivandrum Posts: 47 Thanked: 0 Times View My Garage	Thanks dudes for your suppport!! The problem is finally solved!! It was a problem with the DISTRIBUTION SYSTEM. I got it replaced. They also did do somethimg with the relay. But the bottom line is car's fine now, though i'm not!! 9.5k 4 the whole deal!!!!
	() Thanks

12th March 2008, 22:06	#14
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,215 Thanked: 15,907 Times	how did you guys tune the ECU car?
	() Thanks

18th March 2008, 17:48	#15
alv Newbie Join Date: Mar 2008 Location: Mumbai Posts: 8 Thanked: 0 Times	Need your help - My zen for the last 1 year has this peculiar knocking sound ( its like a wooden knocking ) sound that comes from the drivers side fron from below the bonnet . Its a Thud - thud sound and its very very irritating . I have visited 3 different Maruti service centres with this problem NO ONE has found a solution - Now heres what happens This sound is heard ONLY during summers ( afternoons , heavy traffic in evening sessions ) , no sound at all through winters , rainy season only during summers . This happens after i have driven about 8 Kms + and the engine is sufficiently hot , once the engine cools there is no sound and begins once again after reaching a particular temp . I know its something to do with expansion of some part on heating - but neither me ( given my limited technical knowledge on cars ) nor the service guys ( shame - given their experience in this field ) are able to sort out the issue . anyone who has faced a similar issue -pls respond so that i can pin point the problem to service guys and get rid of it.
	() Thanks